Composite Floor Systems under Column Loss: Collapse Resistance and Tie Force Requirements
Publication: Journal of Structural Engineering
Volume 140, Issue 8
Abstract
This paper presents a computational assessment of the performance of steel gravity framing systems with single-plate shear connections and composite floor slabs under column loss scenarios. The computational assessment uses a reduced modeling approach, while comparisons with detailed model results are presented to establish confidence in the reduced models. The reduced modeling approach enables large multibay systems to be analyzed much more efficiently than the detailed modeling approaches used in previous studies. Both quasi-static and sudden column loss scenarios are considered, and an energy-based approximate procedure for analysis of sudden column loss is adopted after verification through comparisons with direct dynamic analyses, further enhancing the efficiency of the reduced modeling approach. Reduced models are used to investigate the influence of factors such as span length, slab continuity, and the mode of connection failure on the collapse resistance of gravity frame systems. The adequacy of current structural integrity requirements is also assessed, and based on the computational results a new relationship is proposed between the uniform load intensity and the tie forces required for collapse prevention.
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Acknowledgments
Valuable comments and input on this work were provided by Fahim Sadek, H.S. Lew, and Yihai Bao of the National Institute of Standards and Technology, Judy Liu of Purdue University, and Sam-Young Noh of Hanyang University. Helpful exchanges with Bruce Ellingwood (Georgia Tech) and David J. Stevens (Protection Engineering Consultants) during the course of this work are also gratefully acknowledged.
Disclaimer
Certain commercial entities, equipment, products, or materials are identified in this document in order to describe a procedure or concept adequately. Such identification is not intended to imply recommendation, endorsement, or implication that the entities, products, materials, or equipment are necessarily the best available for the purpose.
References
Alashker, Y., and El-Tawil, S. (2011). “A design-oriented model for the collapse resistance of composite floors subjected to column loss.” J. Constr. Steel Res., 67(1), 84–92.
Alashker, Y., El-Tawil, S., and Sadek, F. (2010). “Progressive collapse resistance of steel-concrete composite floors.” J. Struct. Eng., 1187–1196.
Alashker, Y., Li, H., and El-Tawil, S. (2011). “Approximations in progressive collapse modeling.” J. Struct. Eng., 914–924.
American Institute of Steel Construction (AISC). (2010). “Specification for structural steel buildings.”, Chicago, IL.
American National Standards Institute (ANSI). (1982). “Minimum design loads for buildings and other structures.”, New York.
American National Standards Institute/Steel Deck Institute (ANSI/SDI). (2006). “Standard for composite steel floor deck.” C1.0–2006, 〈http://www.sdi.org/ansi/C1SDIANSI.pdf〉 (Apr. 20, 2012).
ASTM. (2006). “Standard specification for structural steel shapes.” A992/A992M-06a, West Conshohocken, PA.
ASTM. (2009). “Standard specification for deformed and plain carbon-steel bars for concrete reinforcement.” A615/A653M-09b, West Conshohocken, PA.
ASTM. (2011). “Standard specification for steel sheet, zinc-coated (galvanized) or zinc-iron alloy-coated (galvannealed) by the hot-dip process.” A653/A653M-11, West Conshohocken, PA.
American Welding Society (AWS). (2010). “Structural welding code—Steel.”, Miami.
ASCE. (2010). “Minimum design loads for buildings and other structures.”, Reston, VA.
ASTM. (2007). “Standard specification for steel wire, plain, for concrete reinforcement.” A82/A82M–07, West Conshohocken, PA.
Cashell, K. A., Elghazouli, A. Y., and Izzuddin, B. A. (2011a). “Failure assessment of lightly reinforced floor slabs: I: Experimental investigation.” J. Struct. Eng., 977–988.
Cashell, K. A., Elghazouli, A. Y., and Izzuddin, B. A. (2011b). “Failure assessment of lightly reinforced floor slabs: II: Analytical studies.” J. Struct. Eng., 989–1001.
Ellingwood, B. R., Smilowitz, R., Dusenberry, D. O., Duthinh, D., Lew, H. S., and Carino, N. J. (2007). “Best practices for reducing the potential for progressive collapse in buildings.”, National Institute of Standards and Technology, Gaithersburg, MD.
European Committee for Standardization (CEN). (2004). “Eurocode 2: Design of concrete structures—Part 1-2: General rules—Structural fire design.”, Brussels.
Federal Emergency Management Agency (FEMA). (2000). “State of the art report on connection performance.”, Washington, DC.
Foley, C. M., Barnes, K., and Schneeman, C. (2008). “Quantifying and enhancing robustness in steel structures: Part 2–Floor framing systems.” Eng. J., Fourth Quarter, 267–286.
Geschwindner, L. F., and Gustafson, K. D. (2010). “Single-plate shear connection design to meet structural integrity requirements.” Eng. J., Third Quarter, 189–202.
Gilbert, R. I., and Sakka, Z. I. (2007). “Effect of reinforcement type on the ductility of suspended reinforced concrete slabs.” J. Struct. Eng., 834–843.
Gudmundsson, G. V., and Izzuddin, B. A. (2010). “The ‘sudden column loss’ idealisation for disproportionate collapse assessment.” Struct. Eng., 88(6), 22–26.
Guo, W., and Gilsanz, R. (2003). “Simple nonlinear static procedure for progressive collapse evaluation.” Proc., Steel Building Symp.: Blast and Progressive Collapse Resistance, American Institute of Steel Construction, Chicago, IL, 97–106.
International Code Council (ICC). (2009). International building code, Falls Church, VA.
Izzuddin, B. A., Vlassis, A. G., Elghazouli, A. Y., and Nethercot, D. A. (2008). “Progressive collapse of multi-storey buildings due to sudden column loss–Part I: Simplified assessment framework.” Eng. Struct., 30(5), 1308–1318.
Kwasniewski, L. (2010). “Nonlinear dynamic simulations of progressive collapse for a multistory building.” Eng. Struct., 32(5), 1223–1235.
Lew, H. S., Main, J. A., Robert, S. D., Sadek, F., and Chiarito, V. P. (2012). “Performance of steel moment connections under a column removal scenario. I: Experiments.” J. Struct. Eng., 98–107.
LS-DYNA [Computer software]. Livermore Software Technology Corporation, Livermore, CA.
Main, J. A., Bao, Y., Sadek, F., and Lew, H. S. (2010). “Experimental and computational assessment of robustness of steel and reinforced concrete framed buildings.” Applications of Statistics and Probability in Civil Engineering: Proc. of the 11th Int. Conf., Taylor & Francis Group, London, 2184–2192.
Main, J. A., and Sadek, F. (2012). “Robustness of steel gravity frame systems with single-plate shear connections.”, National Institute of Standards and Technology, Gaithersburg, MD.
Main, J. A., and Sadek, F. (2013). “Modeling and analysis of single-plate shear connections under column loss.” J. Struct. Eng.., 04013070.
Murray, Y. D., Abu-Odeh, A., and Bligh, R. (2007). “Evaluation of LS-DYNA concrete material model 159.”, Federal Highway Administration, McLean, VA.
Ollgaard, J. G., Slutter, R. G., and Fisher, J. W. (1971). “Shear strength of stud connectors in lightweight and normal weight concrete.” Eng. J., 8(2), 55–64.
Powell, G. (2003). “Collapse analysis made easy (more or less).” Proc., 2003 Annual Meeting of the Los Angeles Tall Buildings Structural Design Council, Los Angeles Tall Buildings Structural Design Council, Los Angeles, CA, 1–14.
Rambo-Roddenberry, M. (2002). “Behavior and strength of welded stud shear connectors.” Ph.D. dissertation, Virginia Polytechnic Institute and State Univ., Blacksburg, VA.
Sadek, F., El-Tawil, S., and Lew, H. S. (2008). “Robustness of composite floor systems with shear connections: Modeling, simulation, and evaluation.” J. Struct. Eng., 1717–1725.
Sadek, F., Main, J. A., Lew, H. S., and El-Tawil, S. (2012). “Performance of steel moment connections under a column removal scenario. II: Analysis.” J. Struct. Eng., 108–119.
Stevens, D. (2008). “Assessment and proposed approach for tie forces in framed and load-bearing wall structures.” Final rep., Prepared for Security Engineering Working Group, Protection Engineering Consultants, Dripping Springs, TX.
Thompson, S. L. (2009). “Axial, shear and moment interaction of single plate ‘shear tab’ connections.” M.Sc. thesis, Milwaukee School of Engineering, Milwaukee.
U.S. Dept. of Defense (U.S. DOD). (2009). “Design of buildings to resist progressive collapse.”, Washington, DC.
Weigand, J. M., Meissner, J. E., Francisco, T., Berman, J. W., Fahnestock, L. A., and Liu, J. (2012). “Overview of AISC/NSF structural integrity research and preliminary results.” Proc., 2012 Structures Congress, ASCE, Reston, VA.
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Published In
Journal of Structural Engineering
Volume 140 • Issue 8 • August 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Dec 21, 2012
Accepted: Sep 16, 2013
Published online: Feb 4, 2014
Discussion open until: Jul 4, 2014
Published in print: Aug 1, 2014
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